– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Tue 01 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Tue 01 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Tue 01 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Very mild (max 19°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | |  | |  | | |  | |  | | | | |
rain shwrs | rain shwrs | rain shwrs | light rain | rain shwrs | rain shwrs | risk tstorm | rain shwrs | some clouds | risk tstorm | rain shwrs | clear | clear | clear | clear | clear | clear | |
Cloud base (m) | 850 | 1750 | 2150 | 750 | 2250 | 1650 | 2100 | 2750 | 2500 | 6500 | 2900 | 5250 | 3350 | ||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 0.3 | 0.6 | 0.7 | 3 | 0.4 | 3 | 0.9 | — | 0.5 | 0.4 | — | — | — | — | — | — |
max °C | 19 | 14 | 14 | 15 | 11 | 12 | 13 | 11 | 14 | 17 | 13 | 18 | 21 | 17 | 21 | 23 | 19 |
min °C | 16 | 12 | 13 | 14 | 9 | 10 | 13 | 9 | 10 | 17 | 12 | 13 | 21 | 15 | 16 | 23 | 16 |
chill °C | 16 | 11 | 12 | 13 | 8 | 10 | 13 | 9 | 10 | 17 | 12 | 13 | 21 | 15 | 16 | 23 | 16 |
Freezing level m | 3400 | 3000 | 2550 | 2600 | 2200 | 2100 | 2250 | 2250 | 2400 | 2700 | 2750 | 2900 | 3100 | 3100 | 3250 | 3400 | 3350 |
 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 9mm), mostly falling on Wed night. Very mild (max 19°C on Tue afternoon, min 9°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Warm (max 23°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
Abbotsford Airport | |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.